linux-kernel - Re: [PATCH] i2c-mpc: avoid I2C abnormal after resuming from deep sleep

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Message-ID: <20120229183436.GA30545@pengutronix.de>
Date:	Wed, 29 Feb 2012 19:45:23 +0100
From:	Wolfram Sang <w.sang@...gutronix.de>
To:	Zhao Chenhui <chenhui.zhao@...escale.com>
Cc:	linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org,
	Li Yang <leoli@...escale.com>
Subject: Re: [PATCH] i2c-mpc: avoid I2C abnormal after resuming from deep
 sleep

Hi,

On Wed, Feb 29, 2012 at 06:39:21PM +0800, Zhao Chenhui wrote:
> When entering deep sleep, the value in the registers I2CFDR and
> I2CDFSRR are lost. This causes I2C access to fail after resuming.
> 
> Add suspend/resume routines to save/restore the registers
> I2CFDR and I2CDFSRR.
> 
> Signed-off-by: Zhao Chenhui <chenhui.zhao@...escale.com>
> Signed-off-by: Li Yang <leoli@...escale.com>
> ---
>  drivers/i2c/busses/i2c-mpc.c |   34 +++++++++++++++++++++++++++++++++-
>  1 files changed, 33 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c
> index a8ebb84..f95a647 100644
> --- a/drivers/i2c/busses/i2c-mpc.c
> +++ b/drivers/i2c/busses/i2c-mpc.c
> @@ -1,7 +1,9 @@
>  /*
>   * (C) Copyright 2003-2004
>   * Humboldt Solutions Ltd, adrian@...boldt.co.uk.
> -
> + *
> + * Copyright 2012 Freescale Semiconductor, Inc.
> + *

I'd think the change is too trivial to claim copyright on the file.

Thanks for the contribution,

   Wolfram

-- 
Pengutronix e.K.                           | Wolfram Sang                |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |

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